Erosion control ; Farming system ; Farming;Agriculture ; Historical geography ; Latin America ; Mexico ; Slope ; Terracecultivation;Terrace cropping ; Venezuela
Field work in Venezuela and Mexico suggested to the A. that very wide terraces incrementally developed in pre-Columbian times as a result of controlled erosion from hillside cultivation more than by purposeful human design. - (DWG)
Agriculture ; Rural area ; Slovenia ; Terracecultivation
Slovenia is a country of exceptionally diverse landscapes at the intersection of four major European macroregions: the Alpine, Pannonian, Dinaric, and Mediterranean regions. Terraces, which are a characteristic Mediterranean landscape element, occur
in all landscape types, but they vary in terms of density, purpose, and current function. Terraces, which define the most characteristic terraced landscape, are most common in the Mediterranean environment. - (L'A.).
Terrace origins : hypotheses and research strategies
Farming system ; Farming;Agriculture ; Historical geography ; Latin America ; Research ; Slope ; Terracecultivation;Terrace cropping
Hypothesis is advanced that agricultural terraces in river bottoms and on hillslopes emerged over time as the result of natural incremental processes abetted by soil management techniques devised by small farmers. - (DWG)
the 1970s were terraced and cultivated. The terraces have now been abandoned to the piping process. The research focuses on the relationship between the size and position of pipes and the physical and geochemistry properties of the local highly dispersive
marl lithology; and the extent to which the reworking of the materials for terracecultivation has exacerbated piping erosion.
This study aims to identify some of factors contributing to the piping process in abandoned terraces in 7 sites located in the Murcia Region. The local landscape has the appearance of badland geomorphology, possessing deep valleys which until
Preserving characteristics of the agricultural landscape through agri-environmental policies : the case of cultivationterraces in Greece
Agricultural practice ; Agro-ecology ; Farming system ; Greece ; Landscape ; Landscape esthetics ; Lesvos ; Terracecultivation
The paper discusses the effectiveness of an agri-environmental policy measure for the reconstruction of cultivationterraces in Greece, with regard to existing practices of farmers. Findings for Lesvos reveal that only part-time and hobby farmers
have participated and that they acknowledge the productive, conservation and symbolic value of terraces.
Assessing soil erosion in a terraced paddy field using experimental measurements and universal soil loss equation
Agricultural practice ; Agropedology ; Cultivated land ; Experiment plot ; Rice ; Soil erosion ; Taiwan ; Terracecultivation ; Water erosion
Agropédologie ; Culture en terrasse ; Erosion des sols ; Erosion hydrique ; Parcelle expérimentale ; Pratique culturale ; Riz ; Sol cultivé ; Taïwan
On an experimental site in Hsinchu county, Northern Taiwan, a terraced rice field was used to investigate the soil erosion under the regular cultivation of rice in 2005, fallow in 2006, and planting with green manure in 2007. The results show
that infiltration rates significantly increase when a terraced paddy field is under fallow or is planted with green manure; the paddy is more vulnerable to embankment collapse and increased the rates of soil erosion. The comparison revealed that soil conservation
using rice-planted terraced paddy was more effective than that resulting from other uses. The government should formulate effective measures and maintain sustainable rice planting in the terraced paddies.
Erosion processes in high mountain agricultural terraces in Peru
Agropedology ; Andes ; Experiment plot ; High mountain ; Land use ; Morphometry ; Mountain ; Peru ; Rainfall simulation ; Soil erosion ; Terracecultivation
Paper examines the problem of changing human activities in the fragile environment of old agricultural terraces in the Central Andes of Peru. Eight experimental plots were established in the Santa Eulalia basin at elevations of 2800 m up to 3650 m
Erosion and terrace failure due to agricultural land abandonment in a semi-arid environment
. At catchment scale all abandonned fields were surveyed and characteristics of each field were described. Additionally the AA. surveyed abandonned and cultivatedterraces and used statistical analyses to determine the factors that influence terrace failure
The aim of this study was to assess the extent and causes of erosion and terrace failure on abandonned fields and to discuss options for mitigation. The study was carried out in the Carcavo basin, a semi-arid catchment in southeast Spain
. At field scale they constructed a detailed digital elevation model (DEM) for an abandoned terrace field in order to calculate sediment losses since time of abandonment. The results revealed that more than half the abandoned fields had moderate to severe
erosion and the statistical analysis showed that these fields had significantly steeper slopes, were terraced and had cereals as previous land use. Factors that increase the risk of terrace failure were land abandonment, steeper terrace slope, loam texture
, valley-bottom position and shrubs on the terrace wall.
Land abandonment and slope gradient as key factors of soil erosion in Mediterranean terraced lands
Aegean Sea ; Agricultural practice ; Agricultural retreat ; Ecosystem ; Greece ; Island ; Land use ; Mediterranean area ; Slope gradient ; Soil erosion ; Sustainable development ; Terracecultivation
A field study was conducted for 2 years, in Lesvos Island, Greece, in order to research the evolution of natural resources such as soil and vegetation, following land abandonment, considering 3 land uses, cultivation, short-time abandonment and long
Cultural terraces are one of the anthropogenic interventions in the Earth surface caused by the agrarian activity. Also in Slovenia they have reshaped many landscapes in the Sub-Mediterranean and the Sub-Pannonian Slovenia as well
as in the Dolenjska Region. We distinguish between old traditional cultural terraces which differ from a province to province and new, mostly vinegrowing terraces, which are similar to one another due to the use of same machinery. -(L'A.).
Quantitative study on influences of terraced field construction and check-dam siltation on soil erosion
China ; Dam ; Erodibility ; Gully erosion ; Human impact ; Hydraulic works ; Loess ; Model ; Plateau ; Quantitative analysis ; Shaanxi ; Slope gradient ; Soil erosion ; Soil properties ; Soil water ; Terracecultivation ; Watershed
To study the influences of terraced field construction and check-dam siltation on soil erosion of a watershed, the AA. built a simplified watershed model for the Loess Plateau hilly-gully region including terraced fields, slope farmlands, steep
with the increase in terraced field area percentage, while the soil erosion modulus below the edge of gully exhibited a linear decline along with the increase in siltation heigh.